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.l. W. BARWELL, JQWARD, N. NELSON, J. HINGHER, W. E. BOOTH, AND W. L. BLOWS.

FEEDING APPARATUS. APPLICATION FILED APR. 17. 1919.

1,418,267, Pat ented May 30, 1922.

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J. W.BARWELL, wmm, N. NELSON, 1. HINGHER, W. E. 300m, AND w. L. BLOWS. FEEDING APPARATUS.

I APPLICATION- FILED APR- IT. l9l9- 1,418,267, PatentedMay 30, 1922.

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. Z Wc/Zz er 3007/1 Mflurljiams, m @%M. 25. VMQ, .2422? iJNlTED STATES PTENT OFFIQE...

JOHN W. BARWELL, JEROME WARD, N BOOTH, AND WILBUR'L. BLOWS, 01E FORD CALIF MEAL COMPANY, OF

NOIS.

Application filed April 17,

T 0 all w ham it may concern WAUKEGAN, ILLINOIEF,

ICOLAY NELSON, JOSEPH. HINGHER, WALTER E. WAUKEGA'N, ILLINOIS. ASSIGNORS T0 BLAIGH- A CORPORATION 01? ILLI- FEEDING A'PPARATUS.

Specification of Letters Patent.

Be it known that we, JOHN W. BARWELL,

Jnnonn WARD, Hmorinn.

VVALTER E. Boorr NIGOLAY Nnnson,

Josnrn and VVILBUR Ia. Brows. citizens of the United States, re-

siding at lVaukegan, and State of Illinois,

in the county of Lake have invented certain new and useful Improvements in Feeding Apparatus, of which the following is a speci fication.

This invention relates to a device or apparatus for feeding grain or and for separating stones, iron or other hard or heavy 0 material which is being fed. particularly having suction feeds,

the like. to mills nails, pieces of jects from the This device is applicable to centrifugal mills but may be used in connection with any mill or wherever it may be utilized, by provlding suitable suction for drawing air and the materlal .to be fed,

through the feeding device.

The objects of this invention are to provide a new and improved form of feeding apparatus; to provide having a novel feed adjusting for separating stones, the like from the grain;

to provide means pieces of metal or to provide a feedlng device more fully hereinafter;

a feeding apparatus mechanlsm having a sight opening; and in general to provide such an described In the accompanying drawings illustrating this invention:

Fig. 1 1s a front view of the'feeding apparatus shown in position on a mill;

Fig. 2 isa longitudinal, sectional view taken on the line 2-2 of Fig. 1; and,

Fig. 3 is a detail of the feed regulating plate.

One of the principal features of this invention consists in providing an arrangement whereby a downwardly flowing stream like met of grain orthe carried into blast of air and obnoxious articles are separated from discharged from the In the particular form shown in 1 indicates a p0 having the usual feed opening grain and preferably feeder. the drawings, trifugal mill by .a stream or the mill while The feeding apparatus is the rtion of a cenbolted or otherwise secured to the mill and comprises a lower section 6 and upper section 7, which are bolted togeth screws .8, although these as er by means of bolts or ctions may be 1919. Serial No. 290,723.

formed integrally if desired. The lower section has end walls 9 and is provided with an inlet aperture 10 for the grain or material to be fed, and with an inlet aperture 11 for the air. it is also provided with an outlet aperture 12 which registers with the inlet aperturez) of the mill. The inlet aperture is formed by the side walls and by a front wall 13 and a top wall 14;, the latter projecting downwardly and inwardly to form the top of the outlet aperture 12. baffle plate 15 projects inwardly and downwardly from the front wall 13 and coacts with a second baffle plate 16 which projects downwardly and outwardly from the rear of the inlet or aperture 10. The two baflie plates are arranged to provide a relatively .ong narrow feed opening 17, but the lower end of the plate 16 extends below the plate 15 so that the grain passing through this passageway is directed outwardly and downwardly as indicated by the arrow X. The bottom of the lower section comprises a wall 18 which extends upwardly and'outwardly from the feed opening 5 and forms the bottom side of the outlet aperture 12. A second plate or wall. 20 connects with, or is a continuation of the plate 18 but extends downwardly and outwardly and terminates at a point 21 somewhat below and inwardly from the lower edge 22 of the baffle plate 16, thus forming a passageway 23. The air inlet aperture 11 is formed by the end walls 9, front wall 13 and a rear wall 24twhich is substantially parallel to the wall 13 but has its inner surface curved or concaved as shown at 25 so that the air passing upwardly over its surface will be directed somewhat toward the end 22 of the baffle plate 16 or so as to have a circular or rotary motion in the adjacent portion of the feed device. The lower end of the air inlet passageway is preferably bevelled as shown and is provided with gui'deways 26 for a slide 27 for regulating the air opening. This slide may beheld in adjusted position in any suitable manner but is preferably provided'with a lug or projection 28 having a hole for an adjustable stop-bolt or screw 29. This screw v irough a hole 30 in a cross-bar31 which 1s secured to the frame or casing an is provided with a nut 32 for holding the same in adjusted position. This provides means for adjusting the air opening which 'in the direction indicated means of a set screw 43 then passes down and will ordinarily be sufliciently .wide to permit the discharge of ,nails, stones or the like, but if any unusually large objects lodge in this trap portion of the apparatus, they may be discharged bypulling up the slide 11 and then the slide may be pushed down until the projection 28 strikes the head of the screw 29 so that it will again come to adjusted position.

The front wall 13 is provided with a sight opening 33 covered by a glass 34 so that the operation of the feed device may be readily observed without disturbing any of the mechanism.

The upper section 7 comprises a chute which registers with the inlet aperture 10 of the lower section. A feed roller 35 is mounted on a shaft 36 which passes through the side walls 37 of the upper section and is mounted in suitable bearings 38. This shaft is driven by an suitable means such a pulley 39 and belt 40. An angle bar ll. directs the material in the upper part of the chute onto the wheel 35 which rotates by the arrow. A. resilient feed plate or guide 4.1 is secured. to the back of the section 7 by screws 42 and its free end tends to swing downward and away from the feed roller or wheel 35. The plate is adjusted toward the wheel by passing through The lower portion to form fingers 4A- the back of the chute. of the plate 4-1 is slit as shown in Fig. 3.

The material to be fed into the mill is supplied to the upper section or chute 7 in any desired manner'preferably so that the chute is kept substantially full. The amount of grain to feed may be readily adjusted or regulated by turning the screw 43 to swing the fingers or lower edge of the plate 41 toward or away from the feed roller 35 so as to decrease or increase the discharge passage. It will be noted that, if any hard or unyielding object enters with the ma 'terial,'it will be pressed against one or more of the fingers 44: Which will readily yield to admit its being forced through by the wheel so that the entire guide plate 41 does not need to be bent, or swung away from the roller. This will prevent the feed opening from being temporarily enlarged and permitting an excess of material to pass through.

As the grain or material which is being l ed passes through the feed opening 17, it is directed outwardly over the lower end of the plate 16 and falls on the slide 27. It over thelower edge of the slide where it is met 'by the upwardly directed stream of air coming through the air inlet. The downward movement of the grain is stopped by the air and theair and grain then partake of a whirlwind or rotary movement and some of the air'and grain then up over the wall 20 -the discharge conduit and into pass together through the passage-way 23 andthen down over the wall or plate 18 into the feed opening 5 of the mill. Other kernels of grain appear to circulate or revolve about in the lower portion of the feed device momentarily before passing into the outlet 23. It pieces of metal, stones or the like, are permitted to pass into the mill, they are apt to injure the mill or cause files to be started therein. Such things, being heavier than the grain, will not be stopped by the air but will drop down to the bottom of the leeding apparatus and pass out through the air inlet. Some of these heavier particles, such as tacks, nails or the like, will pass down along the slide 27 and be caught by the incoming air, and will strike against the curved face 25, and then fall down through the inlet opening. These heavy particles however are on the outer circuIn-' ference of the whirlwind or air rotating iii-the lower portion of the device, and may be carried back again onto the slide 27, but will eventually pass out though the opening. This circular or rotary movement however, is exceedingly etlective in making the desired separation, and by adjusting the air inlet, it has been found that heavy kernels of grain may be separated from lighter kernels as well as separating heavy foreign particles from the grain. If any unusually large article is caught, it may be discharged by pulling up the slide 27 as above stated.

The sight opening to observe whether the proper amount of grain is being fed and assists in regulating the feed which may be done by adjusting the screw 43. It also serve whether any large articles have passed .into the lower compartment of the feed apparatus and should be removed therefrom. i

It will be seen from this description that we provide an exceedingly simple and convenient feeding apparatus which has been proven in actual operation to be effective in separating heavy objects or articles from the grain and most of these objects are dis charged at once from the feedingapparatus so that it is always in operative condition and not apt to become clogged by a collection of such articles. Having thus described our invention'what we claim and desire to secure by Letters Patent is;

l. A feeding apparatus having a conduit for directing a stream of grain downwardly a conduit'for directinga stream of air upwardly to meet the stream of grain to form a rotary movement and a discharge conduit for receiving the air and the grain carried thereby, the arrangement being such that permits the operator permits him I to obthe air will carry all of the grain through v a mill or the like while permitting the discharge of heavy objects which will be separated from the grain by the rotary movement of the air and will drop downwardly through the air conduit.

2. A feeding apparatus having. a grain inlet in the top thereof, an air inlet in the bottom thereof, and a discharge outlet in the side thereof, and having a passageway formed to cause the upwardly moving current of air to meet the downwardly moving stream of grain to create a rotary movement and carry it through the outlet aperture while permitting heavier objects to drop down and be separated from the grain.

3. A feeding apparatus for mills, compris ing a casing having a grain inlet in the top thereof, baffle plates arranged below the inlet for directing the grain downwardly and outwardly, said casing also having an air inlet in the bottom thereof with a passage-way for directing the air upwardly to meet the grain, said passageway being formed so as to create a rotary movement of the air and grain, said casing also having a lateral passage-way through which the air and grain is drawn while permitting heavier articles to fall down through the air inlet.

4:. A feeding apparatus comprising a casing having an opening in the top thereof, two baflie plates below the opening forming a transverse narrow passage-way, one of said plates being extended beyond the other to direct the material outwardly, an adjustable air inlet in the bottom of the casing below said. passage-way, said casing having a sight opening in the front thereof, said air inlet having a rear wall back of the passage-way with its surface curved to direct the air toward the lower edge of the extended baffle plate, the rear portion of the casing comprising a passage-way extending first upwardly and then downwardly to the outlet aperture.

5. A feeding apparatus comprising a casing 6 having end walls 9 and having an inlet aperture 10, an air inlet aperture 11, and an outlet aperture 12, said casing having a top wall let which extends downwardly and inwardly toward the outlet aperture; also having a baffle plate 15 and a baffle plate 16, the latter projecting downwardly and outwardly beyond the plate 15, a front wall 13 having a sight opening with a transparent cover, said air inlet having a rear wall 2% with a curved outer face, a slide for said air inlet, means for holding the slide in adjusted position, said casing also having bottom walls 20 and 18 which extend respec tively upwardly and then downwardly to the outlet aperture 12, substantially as described.

6, A feeding device of the character described, having a feed passageway for the rain, and having an air inlet having one of its walls formed to cause a rotary movement of the air and grain before passing through the outlet.

7. A feeding device, having a downwardly sloping bottom with an air inlet at the lower edge of the bottom, said inlet having a curved guide portion at one side thereof for causing a rotary movement, the outlet of the feed device being above said curved portion.

8. Afeeding device of the character set forth, having an adjustable sloping bottom, means for directing the material onto said bottom, said device having an air inlet along the lower edge of the bottom, and having a substantially vertical concave wall along one side of the air inlet, and having an outlet above the wall, the arrangement being such that the material is given a whirling or rotary movement in the lower portion of said device adjacent to said concave wall.

JOHN W. BARWELL. JEROME WARD. NICOLAY NELSON. JOSEPH HINGHER. WALTER E. BOOTH. WILBUR L. BLOWS. 

